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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2020/04/22 16:29:38 UTC

[GitHub] [druid] gianm commented on issue #9707: Add IS_MULTIVALUE and COMPLEX_TYPE columns to INFORMATION_SCHEMA.COLUMNS

gianm commented on issue #9707:
URL: https://github.com/apache/druid/issues/9707#issuecomment-617887339


   +1 on the concept. This would be a great addition. The DruidSchema is actually in a place already where it could know which columns are multivalue — it gets it from SegmentMetadata queries and caches the results to avoid performance issues. It just doesn't plumb the information into the INFORMATION_SCHEMA.
   
   I don't recall if SegmentMetadata queries return info about what complex types are in play, but if they don't, they could be extended to do so.
   
   @JulianJaffePinterest any interest in contributing something that does this?


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